class song(object):

    def __init__(self,lyrics):
        self.lyrics = lyrics

    def sing_me_a_song(self):
        for line in self.lyrics:
            print line

    def the_length_of_the_song(self):
        print "The length of the song :",len(self.lyrics)

    def reverse_order_the_song(self):
        for i in range(len(self.lyrics)):
            print self.lyrics.pop(-1)


happy_bday = song(["Happy birthday to you",
                   "I don't want to get sued",
                   "So I'll stop right there"])

bulls_on_parade = song(["They rally around the family",
                        "With pockets full of shells"])

happy_bday.sing_me_a_song()

bulls_on_parade.sing_me_a_song()

happy_bday.the_length_of_the_song()

happy_bday.reverse_order_the_song()
